Universal Wrap for Securing a Thermal Pack

ABSTRACT

A system and method for providing a universal wrap that can apply a thermal pack to many different regions of a patient&#39;s body. The universal wrap is provided in a standardized form. The medical provider is provided with options to modify the standardized form in order to adapt the wrap to many different applications.

BACKGROUND OF THE INVENTION 1. Field of the Invention

This invention relates to the field of medical products. Morespecifically, the invention comprises a wrap that can be used to securea thermal pack against a selected portion of a patient's anatomy.

2. Description of the Related Art

Thermal packs are used in a wide variety of medical therapies. The term“thermal pack” should be understood to include any device intended totransfer heat to a patient's body or to remove heat from a patient'sbody. Examples include ice packs, cold gel packs, and hot packs.

There are numerous prior art examples of strap and wrap devicesconfigured to hold a thermal pack against a specific anatomical region.There are wraps designed to press a thermal pack against a patient'sknee. There are different designs intended to hold a thermal packagainst a patient's ankle. Each of these designs are functionallydissimilar. Each works well for its intended application but lacks theflexibility to accommodate a different application.

Therapy based on heat transfer must often be applied shortly after aninjury occurs. This is particularly true for cold therapy, where theefficacy is greatest in the few hours immediately following an injury.Thus, a medical practitioner needs to have the ability to apply a wrapupon the presentation of an injured patient. It is not practical toorder a specialized wrap and then wait a day or more for its delivery.It is also impractical to stock a wide range of specialized wraps sothat a suitable wrap for any type of injury is always on hand. A moreversatile wrap is needed, so that a provider can stock one type of wrapand adopt it to various injuries as needed. The present inventionprovides such a solution.

BRIEF SUMMARY OF THE PRESENT INVENTION

The present invention comprises a system and method for providing auniversal wrap that can apply a thermal pack to many different regionsof a patient's body. The universal wrap is provided in a standardizedform. The medical provider is provided with options to modify thestandardized form in order to adapt the wrap to many differentapplications.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a perspective view, showing a wrap assembly made according tothe present invention.

FIG. 2 is a perspective view, showing the wrap of FIG. 1 with a tab inthe open position.

FIG. 3 is a perspective view, showing the configuration of FIG. 1 from adifferent vantage point.

FIG. 4 is a perspective view, showing an alteration to the standardconfiguration.

FIG. 5 is a perspective view, showing the configuration of FIG. 4 in anassembled state.

FIG. 6 is a perspective view, showing the addition of a pair of thermalpacks.

FIG. 7 is a perspective view, showing two exemplary thermal packs.

FIG. 8 is a sectional elevation view, showing internal details of athermal pack.

FIG. 9 is a sectional elevation view, showing internal details of analternate embodiment of a thermal pack.

FIG. 10 is an exploded perspective view, showing a sub-bag used in oneof the thermal packs.

FIG. 11 is a perspective view, showing a sub-bag

FIG. 12 is a sectional elevation view, showing internal details of asub-bag.

FIG. 13 is a perspective view, showing the addition of a temperatureindicating area to a sub-bag.

FIG. 14 is a perspective view with a cutaway, showing the use of bulkthermal media and a plurality of sub-bags in a thermal pack.

FIG. 15 is a perspective view, showing one assembled state for theinventive wrap.

FIG. 16 is a perspective view, showing how the width of the body of thewrap can be modified.

FIG. 17 is a perspective view, showing the embodiment of FIG. 16 withthe addition of a thermal pack.

FIG. 18 is a perspective view, showing the inventive wrap applied to alumbar region of a patient.

FIG. 19 is a perspective view, showing the configuration of FIG. 18 froman anterior vantage point.

FIG. 20 is a perspective view, showing the inventive wrap applied to ashoulder of a patient.

FIG. 21 is a perspective view, showing the inventive wrap applied to ashoulder of a patient.

FIG. 22 is a perspective view, showing the inventive wrap applied to ashoulder of a patient.

FIG. 23 is a perspective view, showing the inventive wrap applied to aknee of a patient.

FIG. 24 is a perspective view, showing the inventive wrap applied to aknee of a patient.

FIG. 25 is a perspective view, showing the inventive wrap applied to aknee of a patient.

FIG. 26 is a perspective view, showing the inventive wrap applied to anankle of a patient.

FIG. 27 is a perspective view, showing the inventive wrap applied to anankle of a patient.

REFERENCE NUMERALS IN THE DRAWINGS

-   10 universal wrap-   12 body-   14 strap-   15 outer surface-   16 tab-   18 inner surface-   20 hook panel-   22 outer surface-   24 inner surface-   26 hook surface-   28 hook surface-   30 cut-   32 first segment-   34 second segment-   36 thermal pack-   38 inner layer-   40 outer layer-   42 expansion valve-   44 hook panel-   45 inner sealing layer-   46 hook panel-   48 bulk thermal media-   49 interior volume-   50 sub-bag-   51 sealed seam-   52 first panel-   54 second panel-   56 outer surface-   58 indicating area-   60 inner surface-   62 sealed perimeter-   64 cut-   65 patient-   66 cut-   67 lumbar region-   68 knee-   70 ankle-   72 interior volume-   74 back surface

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows an embodiment of the wrap used in the present invention.The various features and options of the wrap will be explainedinitially. Then an explanation of how these features and options may beused to secure the wrap to a patient will be provided.

Universal wrap 10 includes a flat and rectangular body 12. The body hastwo lateral edges. Strap 14 attaches to a first lateral edge and extendsaway from the body as shown. Tab 16 connects to the second lateral edge.In FIG. 1, tab 16 is shown folded over and secured to inner surface 18of body 12. Inner surface 18 is covered in loop covering. The side oftab 16 facing away from the viewer is covered in hooks. Thus, pressingtab 16 against inner surface 18 secures the tab to the inner surface.Back surface 74 of tab 16 is provided with a loop covering so that otherhook panels may be secured to it.

In the context of this disclosure the term “loop covering” means anyhook-compatible material. In other words, any fabric to which a hookpanel can be secured when using hook-and-loop fasteners. An example ofhook-and-loop fasteners is VELCRO brand materials such as marketed byVelcro, BVBA. As those skilled in the art will know, manyhook-compatible fabrics are soft and smooth in appearance. They do notnecessarily include coarse pile-type loops such as commonly used severaldecades ago (though the term hook-compatible material would certainlyinclude coarse pile-type loops as well).

Strap 14 has outer surface 22 and inner surface 24. Outer surface 22 isprovided with a loop covering as well. Hook panel 20 includes a hooksurface—facing away from the viewer in FIG. 1. Hook panel 20 can besecured to the distal end of strap 14 by pressing the hook panel ontoouter surface 22—as will be explained subsequently.

FIG. 2 shows the same universal wrap with tab 16 flipped open to revealhook surface 26. One edge of tab 16 remains attached to the seconddistal edge of body 12 as shown. Soft fabrics are preferably used formany of the components of the wrap. Body 12 in this embodiment is anassembly of multiple layers. These layers can be are often assembled bysewing. It is preferable, however, to join the layers by laminating. Alaminated assembly can be cut to a reduced side without the trimmededges fraying or separating. In the example shown in FIG. 2, a bias bandis attachedsewn around the perimeter of body 12. A The stitch line canbe that is used to connect the bias band and if this is present thestitch line also attaches the proximal end of strap 14 and the attachededge of tab 16. Adhesives or lamination techniques can also be used toassemble these components if desired.

FIG. 3 shows the assembly of FIG. 1 from a different vantage point. Inthis view outer surface 15 of body 12 is shown. This outer surface ispreferably provided with a loop covering. The reader can also see howhook panel 20 is attached to the distal end of strap 14 by pressing hooksurface 28 against outer surface 22. The hooks on hook surface 28 engagethe loop covering of outer surface 22 and hold the hook panel in place.The reader will also note how only approximately half of hook panel 20has been pressed onto strap 14—leaving the balance of the hook panelfree. The free portion of hook surface 28 can be pressed onto anotherloop covered surface. Hook panel 20 thereby becomes a connector.

The fabric used for strap 14 preferably has the following properties:(1) It is elastic so that a degree of stretch and compression can beapplied to secure the wrap, (2) At least inner surface 24 is smooth andcomfortable for wearing against a patient, and (3) The band may be cutwithout creating a frayed or unstable edge. This third preferredproperty allows the wrap to be fitted to a wide variety of patients.Strap 14 is provided in a long un-stretched length, such as 42 inches(107 cm). This can accommodate large patients, but will be too long forsmaller patients. The user can cut strap 14 to a shorter length and movehook panel 20 to the newly created distal end.

FIGS. 4-6 show an additional configuration that provides addedflexibility. In FIG. 4, strap 14 has been cut along 30 to create firstsegment 32 and second segment 34. The proximal end of first segment 32remains attached to body 12. A newly-created distal end for firstsegment 32 lies at cut 30. Second segment 34 has a newly createdproximal end at cut 30. Hook panel 20 remains affixed to the distal endof second segment 34 (though the hook panel can of course be removed atany time by pulling it free).

Second segment 34 is typically flipped over and its proximal end is thenplaced over tab 16. The proximal end is then pressed down onto theexposed hook surface 26 of tab 16. The loop covering on the outersurface of second segment 34 engages the hook surface on the tab and thesecond segment is thereby secured. FIG. 5 shows this configuration—withsecond segment 34 secured in place. Second segment 34 can then be loopedover first segment 32 as shown. The exposed portion of hook panel 20 ispressed into the loop covering on first segment 32. A secure andadjustable band is thereby formed. This band can be used to hold body 12against a selected area of a patient.

Of course, a central purpose of the universal wrap is to hold a thermalpack in position. FIG. 6 shows the universal wrap in the configurationof FIG. 5, but with the band opened by unhooking hook panel 20 fromfirst segment 32. As explained previously, inner surface 18 of body 12is provided with a loop covering. This loop covering is used to attachone or more thermal packs 36.

In the example of FIG. 6, the thermal packs are provided in arectangular form. Each thermal pack has one or more hook panels thatengage the loop covering on inner surface 18 when the thermal pack ispressed against inner surface 18.

FIGS. 7-14 provide detail regarding some exemplary thermal packs. Inreviewing these descriptions, the reader should bear in mind that thepresent invention is by no means limited to any particular type ofthermal pack. FIG. 7 shows two examples of the same type of thermal pack36. This example is a cold pack intended to receive heat transferredfrom a patient. The lower of the two thermal packs shown in FIG. 7 hasinner layer 38 facing upward. This is the layer intended to pressagainst the patient. It is covered in a smooth and comfortable material.

The upper of the two thermal packs shown in FIG. 7 is flipped over toexpose outer layer 40. This outer layer will face away from the patient.It includes a pair of hook panels 44, 46. These hook panels areconfigured to secure the thermal pack in place when they are pressedagainst a panel having a loop covering. Expansion valve 42 selectivelyadmits air when the thermal media within the thermal pack expands uponfreezing (assuming that such a type of thermal media is used). At leasta portion of outer layer 40 is preferably made transparent so that auser can see the contents of the thermal pack and observe whether thecontents are liquid or frozen.

A heat transfer medium that undergoes a phase change offers advantagesfor the thermal packs 36. First, the use of a phase change allows theabsorption of much more heat that would be possible in its absence.Second, the use of a phase change provides a steady temperature for theheat transfer medium as it is transitioning from a solid to a liquid(the temperature of a substance being constant in that process).

One suitable heat transfer medium is disclosed in U.S. Pat. No.5,800,491 to Kolen and Nebolon. This patent discloses a composition ofdiscrete hydrophilic absorbers that are hydrated with a liquidcomprising a solution of water and a humectant selected from the groupconsisting of propylene glycol, ethylene glycol, glycerin, dimethylsulfoxide, dimethyl formamide, and combinations thereof. The hydrophilicabsorbers are discrete acrylic polymer granules, such as discretecross-linked polyacrylamide copolymer granules. Upon freezing, thiscomposition creates a solid state that is akin to packed snow or crushedice. It remains pliable instead of freezing into a unified solid mass.More recent developments regarding this type of heat transfer medium aredisclosed in U.S. Pat. No. 9,039,747 to Nebolon and Gardner.

The interior of each thermal pack contains a heat transfer medium. Thispreferably includes the aforementioned hydrating liquid consisting of asolution of water and a humectant selected from the group consisting ofpropylene glycol, ethylene glycol, glycerin, dimethyl sulfoxide,dimethyl formamide, and combinations thereof (as described in the priorart section of this disclosure). Air is admitted to the interior throughexpansion valve 42 during the freezing process. When the medium melts,valve 42 allows air out of the enclosed interior but not the liquidmedium.

FIG. 8 shows a section view through thermal pack 36. Two layers ofsealing material—outer layer 40 and inner sealing layer 45 (the waterimpermeable layer) are heat staked together along sealed seam 51 (whichruns along the entire perimeter of the thermal pack). The inward facingsurface (the side intended to face the patient) also includes innerlayer 38. This cover material is preferably a soft and compliantmaterial that may be comfortably worn against the user's thin clothing(such as a T-shirt) or even directly against the user's skin. Thismaterial preferably wicks moisture away from the user. One of its mainpurposes is to serve as a barrier separating the user from directcontact with the thermal transfer pack. The material thereby regulatesthe rate of heat transfer to a desired level.

Inner layer 38 may be bonded to the thermal pack by any suitablemethod—including adhesives or stitching. It is preferable for the sidefacing the user to have no exposed discontinuities as these may beirritating. Bulk thermal media 48 is contained within interior volume 49formed between the two layers of sealing material. Hook panel 44 isaffixed to the outward-facing side of the assembly.

FIG. 9 shows an enhancement to the cooling pack shown in FIG. 8. Ratherthan placing the cooling media in a single compartment, the version ofFIG. 9 places numerous small bags of cooling media into a larger bag.Sub-bags 50 are relatively small on the order of 0.51 to 2 inches square(1.252.5 cm to 5.0 cm). In many instances it will be preferable to makethem even smaller—such as 0.2 inches square (0.5 cm). The most preferredsize is 0.75 inches square (1.25 cm square).

As explained previously, the cooling media contained within the interioris preferably a substance such as shown in U.S. Pat. No. 5,800,491 toKolen and Nebolon. This substance forms an organized crystalline solidwith a consistency similar to snow. Even as a solid, it remains soft andmalleable. However, the substance such as disclosed in the '491 Patentdoes not absorb as much energy during the transition from a solid to aliquid as pure water. Water can absorb more thermal energy, yet waterhas an undesirable property in that it solidifies into a hard mass(ice). If the entire volume within the thermal pack were simply filledwith water and frozen, the result would be a rigid object that would bequite uncomfortable to the patient.

The thermal pack of FIG. 9 provides the advantageous latent heat ofwater while retaining most of the beneficial aspects of the substancedescribed in the '491 Patent. Each sub-bag 50 is filled with water.Small amounts of other substances may be present as well, but water isby far the main constituent. The volume contained within the interior ofthe thermal pack but outside sub-bags 50 is filled with a substance thatcreates a snow-like solid (such as described in the '491 Patent). Theresult is an advantageous combination of features. Each individualsub-bag 50 freezes into a hard object (containing ice). The surroundingvolume freezes into a malleable snow-like substance. The sub-bags arerelatively small—preferably less than 3 cm on a side. Thus, the overallthermal pack 36 can still bend and flex because the sub-bags 50 can moveabout within the snow-like frozen substance surrounding them. The useremploys the thermal pack of FIG. 9 in the same way as the thermal packof FIG. 8. However, the composite nature of the bag allows a greaterabsorption of thermal energy for the same unit volume.

In some versions of the composite thermal transfer pack the sub-bags orouter bag can include a thermochromatic material. This material changescolor when the media freezes—thereby clearly indicating to the userwhether all the sub-bags are fully transitioned to a solid. In someversions a thermochromatic ink may be added to the water within sub-bags50. In other versions, the thermochromatic material will be a film addedto the sub-bags, the overall bag, or both.

FIGS. 10-14 show a preferred embodiment employing thermochromicmaterials to indicate when the water in the sub-bags is frozen. FIG. 10depicts an individual sub-bag in a disassembled state. First panel 52 isconfigured to join second panel 54 by joining the perimeter of the twopanels together to form a continuous seal (such as by heat fusing orultrasonic welding).

FIG. 11 shows the two panels joined together to form sub bag 50. The bagis filled with water. Sealed perimeter 62 is formed around the perimeterof the two panels so that the water cannot escape.

The present invention is by no means limited to any particular methodfor making the sub bags, and in fact the sub bags may be made using manydifferent methods and materials. One approach is to fold a single pieceof flexible material over on itself. One “sealed edge” is created by thefold and the remaining three edges may then be sealed using a suitablemethod. Another approach is to cut lengths from a continuous tube offlexible material (possibly stored on a roll). The two cut ends can thenbe sealed using a suitable method.

The operation of sub bag 50 is quite simple. When the sub bag is exposedto temperatures below 0 degrees centigrade for a sufficient period thewater within the bag freezes. As is widely known, water displays theunusual characteristic of expanding as it transitions from a liquid to asolid. The material used for the panels 52, 54 is preferablysufficiently elastic to accommodate many freezing and thawing cycleswithout breaking down. Another option is the inclusion of an air pocketwithin the sub bag so that the volumetric change is accommodated byvarying air pressure. Yet another option is including some type of airvalve, However, it is preferable to maximize the heat transfer to andfrom the bag and to minimize complexity. Thus, the preferred embodimentscontain plain water and do not incorporate any sort of valve. The term“plain water” shall mean pure water and solutions in which water makesup 95 percent of the total solution by mass. In some embodiments a smallamount of other material may be added to the water to adjust thefreezing point, to inhibit growth of organic materials, or for someother purpose. However, the other material shall not exceed 5% of thetotal solution by mass.

Returning to FIG. 10, the reader will note that the two panels 52, 54each have an outer surface 56 and an inner surface 60 (referring to theinner and outer surfaces that will result once the two panels are joinedtogether). Each of the two panels 52, 54 also has an indicating area 58.The indicating area may be located on an inner surface, an outersurface, or both (and may in fact comprise the entire surface). However,in the embodiment shown, indicating area 58 is located on the innersurface of each panel.

Indicating area 58 preferably includes a thermochromic material appliedto the surface of the panel. The thermochromic material preferablychanges color at a set point that indicates a complete freezing of thewater within the bag. As an example, the set point might be −2 degreescentigrade, At this point, the thermochromic material can be configuredto change from clear to opaque (such as a medium blue color). When auser sees this color, it indicates that the contents of the particularsub bag have completely frozen. Certain other thermochromic materialsmay change from one color to another color (such as white to indigo).

A thorough discussion of thermochromic materials is beyond the scope ofthis disclosure. However, an exemplary choice is a leuco dye secured inmicrocapsules. Commonly used leuco dyes include sprirolactones,fluorans, spiropyrans, and fulgides. The microcapsule containing the dyeis a small enclosed volume that retains the dye without leakage. Theencapsulating material is thermally conductive so that the surroundingtemperature is quickly assumed by the leuco dye within the microcapsule.Because the mass of leuco dye within each microcapsule is very small, itcan change temperature rapidly. These microcapsules can be adhered tothe inner surfaces of the panels 52, 54. A sufficiently dense array ofsuch microcapsules will be in contact with the water within the sub bag.

Those skilled in the art will know that leuco dye microcapsules can beprinted on a surface or sprayed on a surface. They may even be embeddedin the material itself as it is manufactured. Leuco dyes are known tohave limited accuracy in their indication, since the color changeusually occurs in about a 3 degree centigrade band. With this in mind,one could select a leuco dye that transitioned to the opaque statebetween −1 and −4 degrees centigrade. With such a selection, the dyewould reliably indicate the frozen state.

Those skilled in the art will also know that liquid crystalthermochromic agents generally have a better temperature accuracy thanleuco dyes. One could employ liquid crystal materials though this wouldlikely drive up the cost and limit the color choices. The presentinvention is by no means limited to any particular thermochromic agent,nor is it limited to any particular method of applying the thermochromicagent.

As an example, one may consider an embodiment where the sub-bags aremade from a long length of flexible tube. The tube may be cut atsuitable intervals to create a short, tubular section with two openends. The two open ends are sealed to form the sub-bag. In this examplethe leuco dye may be a printed continuously along the entireinward-facing surface of the flexible tube. The result is that theinward-facing surface of the sub-bag is covered by the leuco dye. Fromthe user's perspective, the entire sub-bag will appear to include theleuco dye. Thus, the color change will appear to be the entire sub-hag.

FIG. 11 provides a perspective view of sub bag 50 filled with water.FIG. 12 provides a sectional elevation view through the bag depicted inFIG. 11. A volume of water 72 is trapped between the panels 52, 54 andcontained by sealed perimeter 5462. The thermochromic agent ispreferably placed on the inner surface of each panel so that it has moredirect contact with the water.

FIG. 13 shows a perspective view of the same sub bag 50 after thethermochromic material has transitioned to an opaque state. The materialselected for panels 52, 54 should be transparent or semi-transparent ifthe thermochromic material is placed on the inner surface of the panels.In the example of FIG. 13 the material of the panels is transparent andthe thermochroic material is deposited on the inner surface of thepanels. Indicating area 58 is visible from the exterior of the sub bagas shown. The indicating area is depicted as a cross-hatched area. Inreality, the indicating area will appear as an opaque region. Forexample, if a medium blue thermochromic agent is used, then indicatingarea 58 will appear as a blue rectangle on the panels (and the user willlikely not perceive the fact that the thermochromic agent is on theinner surface but will instead just perceive the appearance of a bluerectangle on the visible outer surface).

As explained previously, the inventive thermal transfer pack places aplurality of sub bags 50 into a larger bag. FIG. 14 shows a thermal pack36 made by placing a number of sub bags 50 and surrounding bulk thermalmedia 48 into a sealed bag. A cutaway is included in the view to clearlyshow sub bags 50.

The sub bags are surrounded by the bulk transfer media that freezes intoa highly crystalline structure akin to snow. Upon freezing, this duplexcomposition creates a solid state that remains pliable instead offreezing into a unified solid mass. The composition has been previouslyreferred to as a “heat transfer medium.” In the context of the inventiveduplex thermal transfer pack the use of the term “heat transfer medium”is a bit vague, since both the water and the mixture of hydrophilicabsorbers and water with a humectant as a “heat transfer medium.”Accordingly, the water and humectant solution shall be referred to as asolid-pliable heat transfer medium in the context of the duplex thermaltransfer pack. A solid-pliable heat transfer medium is one which remainspliable after the water it has contained transitions from a liquid to asolid.

The sealing material that is used in the creation of outer layer 40preferably has a transparent surface that allows the user to see thecondition of the sub bags within. A user typically places thermal pack36 in a freezer for a long enough period to convert the heat transfermedium to a crystalline solid and to freeze the water within the subbags 50. The user can visually confirm the freezing of the water in thesub bags by noting the change of color on the indicating areas on thesub bags (the areas containing the thermochromic material). Thetransparent surface should be sufficiently clear to allow a user toperceive the color change of the sub bags that are pressed up againstthe other side of the surface. A thin and clear plastic material issufficient.

The transparent surface may only extend for part of one side of the bag,or it may extend for more than that. In the example of FIG. 14, portionsof transparent surface are covered by the hook panels. Other portions ofthe transparent surface may be covered by the expansion valve.

Most of the volume within thermal pack 36 is consumed by the sub bags50. Each sub bag is relatively small compared to the thermal transferpack as a whole, however. Preferably, the longest dimension of a sub bagis less than ⅓ of the longest dimension of the thermal pack as a whole.Even more preferably the longest dimension of a sub bag is less than1/10 of the longest dimension of the thermal pack as a whole.

As an example, the thermal transfer pack of FIG. 14 has a longestdimension of 28 cm. A sub bag 50 used in this example might have alongest dimension of 2.5 cm. The sub bags are preferably pillow-shaped.In this example, the sub bag dimension are 1.25 cm×2.5 cm×0.50 cm. Whenthe thermal transfer pack is placed in the freezer, the sub bags freezeinto hard little “plates.” The surrounding solution of water and ahumectant freezes into a crystalline structure resembling packed snow.It remains soft and malleable. Because the now-hard sub bags are smallin comparison to the overall volume of the thermal transfer pack—andbecause the interstices between the sub bags are packed with the soft“snow”—the thermal transfer pack as a whole retains a soft and malleablefeel.

FIGS. 15-17 illustrate exemplary configurations for the universal wrap.In FIG. 15, outer surface 15 of body 12 is facing toward the user. Strap14 is in an uncut state. It is formed into a loop as shown. Hook panel20 has been used to secure the strap to outer surface 15 by pressing theexposed portion of the hook surface on the hook panel into outer surface15 of body 12. An encircling loop is thereby formed. This loop can beplaced around the patient's waist or chest in order to press thermalpacks affixed to body 12 (on the side facing away from the viewer)against the patient. The outer surface of strap 14 and body 12 areprovided with a loop covering. Thus, the overall circumference can beadjusted by adjusting the overlap of the strap and securing hook panel20 to a desired position on the body or the strap.

FIG. 6 shows a configuration where the strap has been cut in two and thetwo segments are then joined on the side of the loop opposite to body12. This configuration has been described previously and will not berepeated here.

FIGS. 16 and 17 illustrate still another configuration—in which the sizeof body 12 is reduced. Body 12 is preferably made of a fabric that canbe cut to produce a clean and stable edge. Cuts 64, 66 have been made inFIG. 16 to match the width of body 12 to that of strap 14. Turning toFIG. 17, a single rectangular thermal pack 36 has been affixed to themodified body 12. This configuration provides a smaller contact areathat is suitable for some applications.

Returning to FIG. 16, it is also possible to make a single cut that isperpendicular to the orientation of the cuts shown. This single cutwould remove the region of tab 16, resulting in a shape with the strapbeing the long part of the T and the remaining shape of the body beingthe cross piece. This configuration is a good shape for use on the backof a patient's elbow. Of course, the practitioner is not limited toperpendicular cuts. In some instances an angled or curved cut will beadvantageous and these are available as well.

FIGS. 18-27 illustrate examples of how the universal wrap can be appliedto a patient. FIG. 18 shows the example of a patient needing coldtherapy for the lumbar region. The goal is to place thermal packsaffixed to body 12 over lumbar region 67. This example starts with theconfiguration of FIG. 6. One or more thermal packs are affixed to innersurface 18 of body 12 as shown.

The assembly is then lifted into position with the thermal packs pressedagainst the patient's lumbar region as shown in FIG. 18. First segment32 is pulled around the left side of the patient's waist and secondsegment 34 is pulled around the right side of the patient's waist.Looking now at FIG. 19, the patient adjusts the amount of pressure bystretching the first and second segments. When the pressure is at thedesired level, she secures the first and second segments into a belt bypressing hook panel 20 into the loop covering on first segment 32.

For a patient having a waist size as depicted in FIG. 19, it will oftenbe advisable to cut a segment off the distal end of first segment 32,second segment 34, or both. These cuts can be made to place hook panel20 in a convenient location. This is desirable because the user willperiodically remove and reinstall the wrap assembly (or a healthcareprovider will do so). If the thermal packs are cold packs as shown inFIG. 9, they will need to be replaced approximately every four hours. Inorder to replace the packs the user will typically remove the wrap, peelthe old packs off of body 12, and stick on new packs that have just beenremoved from a freezer. The old packs will then be placed in a freezer.In some applications the packs can be removed by folding down a portionof body 12 while leaving the wrap in place. This is an optional method.

FIGS. 20 and 21 show a first approach to placing the universal wrap on apatient's shoulder. A pair of thermal packs are affixed to body 12 andthe assembly is then placed on the left shoulder of patient 65. Strap 14is passed around her back and brought through the gap between her torsoand her right arm. The strap is tightened to a desired extent and thenhook panel 20 is secured to the loop covering on outer surface 15. Thetension on the strap urges the thermal packs beneath body 12 against thepatient's shoulder.

FIG. 21 shows the secured configuration with hook panel 20 secured toouter surface 15. This configuration can be difficult to remove for somepatients. The left arm is likely immobile, since an injury to the leftshoulder is being treated. The patient must therefore pull hook panel 20free by crossing her right arm over her body and using her right hand tograsp the hook panel. In patients with limited mobility this motion canbe difficult.

FIG. 22 shows an alternate method of using the universal wrap to place athermal pack on a shoulder. This version starts with the configurationof FIG. 4, except that cut 30 is made much further away from body 12 sothat second segment 34 is quite short. Returning now to FIG. 22, tab 16is pulled out from body 12 and second segment 34 is secured to tab 16 bypressing the second segment against the hook surface on the tab. Firstsegment 32 is pulled around the patient's body and through the gapbetween her torso and her right arm. Hook panel is transferred to thedistal end of first segment 32 as shown. The loop is then formed bysecuring hook panel 20 to the distal end of first segment 32 andpressing the free end of the hook panel into second segment 34. Theadvantage of this configuration is the fact that hook panel 20 is mucheasier for the user to reach with her right hand.

FIGS. 23-25 show a method of applying the inventive universal wrap to apatient's knee. This process starts with the configuration of FIG. 1. Apair of thermal packs 36 are affixed to the inner surface of body 12.Strap 14 is passed around the area of knee 68—as shown. Hook panel 20 isplaced on the distal end of the strap.

The reader will recall that strap 14 is preferably elastic. In the kneeapplication, the strap can be stretched in a fashion similar to an ACEbandage in order to create a compressive wrap. FIG. 24 shows the processafter strap 14 has been stretched and wrapped around the lower thigh.The distal end of the strap is then wrapped around the inferior kneeregion. FIG. 25 shows the final result. The strap is wrapped nearlythree times around the knee and secured in place by pressing the exposedportion of hook panel 20 back against the outer surface of the strapitself. Tension on the strap urges the thermal packs beneath body 12against the knee.

FIGS. 26 and 27 show an example of applying the inventive universal wrapto a patient's ankle. This process starts with the configuration of FIG.17. FIG. 17 shows a single thermal pack 36 affixed to a body 12 that hasbeen reduced in size. Turning to FIG. 26, thermal pack 26 is placed overthe anterior portion of the patient's ankle. Strap 14 is passed aroundthe ankle with hook panel 20 affixed to its distal end. The strap isthen stretched and wrapped around the ankle one or more times (possiblyafter being cut to a shorter length). FIG. 27 shows this configurationafter hook panel 20 has been secured to the outward facing portion ofthe strap. The inventive wrap system can be combined with the thermalpacks in additional ways that have not been illustrated. The followingparagraphs provide additional examples:

1. The cold packs can be replaced with hot packs containing thermalmedia that are designed to be heated in a microwave.

2. The hook material and the loop material can be reversed in most anysituation.

3. Inelastic material can be used for the strap where desired.

4. The hook panel can be placed on either strap or on the body itself insome circumstances.

5. One or more air bladders can be added in addition to the thermalpacks, or in some instances combined with the thermal packs. Airbladders are disclosed in detail in commonly-owned U.S. patentapplication Ser. No. 16/427,457.

6. The aforementioned air bladders can be provided with hook panels sothat a user can place them on a desired interior surface of theuniversal wrap.

7. A coolant circulation bladder can be added in addition to the thermalpacks or in the place of some or all of the thermal packs. An externalcirculation pump and cooling system can be used with the coolantcirculation bladder. As for the air bladder, a coolant circulationbladder can be provided with hook panels so that a user can place themon a desired interior surface of the universal wrap.

Although the preceding descriptions present considerable detail theyshould be properly viewed as illustrating embodiments of the presentinvention rather than limiting the scope of the invention. Many moreembodiments following the same principles will occur to those skilled inthe art. Accordingly, the scope of the invention should be fixed by thefollowing claims rather than by the examples given.

Having described my invention, I claim:
 1. A method for applying athermal pack to a lumbar region of a patient, comprising: (a) providinga universal wrap, including, (i) a body, having a first lateral edge anda second lateral edge, (ii) said body including an inner surface coveredin hook-compatible material, (iii) a strap connected to said firstlateral edge of said body, with said strap having an outer surface, (iv)a tab connected to said second lateral edge of said body, said tabincluding a hook surface and a back surface, with said tab being foldedover said inner surface with said hook surface on said tab engaging saidhook-compatible material on said inner surface of said body, (v) a hookpanel; (b) providing a thermal pack, including, (i) an outer layer, (ii)an inner layer, (iii) an interior volume containing thermal media, (iv)a hook panel on said outer layer; (c) cutting said strap to form a firstsegment and a second segment; (d) peeling said hook surface of said taboff of said inner surface of said body to expose said hook surface ofsaid tab; (e) pressing said outer surface of said second segment againstsaid hook surface of said tab to connect said second segment to saidtab, said second segment then having a proximal end connected to saidtab and a distal end that is free; (f) said first segment having aproximal end that is connected to said first lateral edge of said bodyand a distal end that is free; (g) affixing said thermal pack to saidbody by pressing said hook panel on said outer layer of said thermalpack against said inner surface of said body; (h) positioning saidthermal pack over said lumbar region of said patient with said thermalpack lying between said lumbar region of said patient and said body; (i)passing said first and second segments around a waist of said patient;and (j) using said hook panel to connect said distal end of said firstsegment to said distal end of said second segment
 2. The method forapplying a thermal pack to a lumbar region of a patient as recited inclaim 1, wherein said thermal media of said thermal pack comprises: (a)discrete hydrophilic absorber granules; and (b) a solution of water anda humectant.
 3. The method for applying a thermal pack to a lumbarregion of a patient as recited in claim 2, wherein: (a) said humectantis selected from the group consisting of propylene glycol, ethyleneglycol, glycerin, dimethyl sulfoxide, dimethyl formamide, andcombinations thereof; and (b) said discrete hydrophilic absorbergranules are comprised of acrylic polymer.
 4. The method for applying athermal pack to a lumbar region of a patient as recited in claim 2,wherein said thermal media further comprises a plurality of sub-bagsfilled with water.
 5. The method for applying a thermal pack to a lumbarregion of a patient as recited in claim 1, wherein said body of saiduniversal wrap is made of soft fabric.
 6. The method for applying athermal pack to a lumbar region of a patient as recited in claim 1,comprising adjusting a length of one of said first segment and saidsecond segment so that said hook panel lies proximate said patient'santerior abdomen when said hook panel is used to connect said distal endof said first segment to said distal end of said second segment.
 7. Themethod for applying a thermal pack to a lumbar region of a patient asrecited in claim 2, comprising adjusting a length of one of said firstsegment and said second segment so that said hook panel lies proximatesaid patient's anterior abdomen when said hook panel is used to connectsaid distal end of said first segment to said distal end of said secondsegment.
 8. The method for applying a thermal pack to a lumbar region ofa patient as recited in claim 3, comprising adjusting a length of one ofsaid first segment and said second segment so that said hook panel liesproximate said patient's anterior abdomen when said hook panel is usedto connect said distal end of said first segment to said distal end ofsaid second segment.
 9. The method for applying a thermal pack to alumbar region of a patient as recited in claim 4, comprising adjusting alength of one of said first segment and said second segment so that saidhook panel lies proximate said patient's anterior abdomen when said hookpanel is used to connect said distal end of said first segment to saiddistal end of said second segment.
 10. The method for applying a thermalpack to a lumbar region of a patient as recited in claim 5, comprisingadjusting a length of one of said first segment and said second segmentso that said hook panel lies proximate said patient's anterior abdomenwhen said hook panel is used to connect said distal end of said firstsegment to said distal end of said second segment.
 11. A method forapplying a thermal pack to a lumbar region of a patient, comprising: (a)providing a universal wrap, including, (i) a body, having a first sideand a second side, (ii) said body including an inner surface covered inhook-compatible material, (iii) a strap connected to said first side ofsaid body, with said strap having an outer surface, (iv) a tab connectedto said second side of said body, said tab including a hook surface, (v)a hook panel; (b) providing a thermal pack, including, (i) an outerlayer, (ii) an inner layer, (iii) an interior volume containing thermalmedia, (iv) a hook panel on said outer layer; (c) cutting said strap toform a first segment and a second segment; (d) pressing said outersurface of said second segment against said hook surface of said tab toconnect said second segment to said tab, said second segment then havinga proximal end connected to said tab and a distal end that is free; (e)said first segment having a proximal end that is connected to said firstlateral edge of said body and a distal end that is free; (f) affixingsaid thermal pack to said body by pressing said hook panel on said outerlayer of said thermal pack against said inner surface of said body; (g)positioning said thermal pack over said lumbar region of said patientwith said thermal pack lying between said lumbar region of said patientand said body; (h) passing said first and second segments around a waistof said patient; and (i) using said hook panel to connect said distalend of said first segment to said distal end of said second segment. 12.The method for applying a thermal pack to a lumbar region of a patientas recited in claim 11, wherein said thermal media of said thermal packcomprises: (a) discrete hydrophilic absorber granules; and (b) asolution of water and a humectant.
 13. The method for applying a thermalpack to a lumbar region of a patient as recited in claim 12, wherein:(a) said humectant is selected from the group consisting of propyleneglycol, ethylene glycol, glycerin, dimethyl sulfoxide, dimethylformamide, and combinations thereof; and (b) said discrete hydrophilicabsorber granules are comprised of acrylic polymer.
 14. The method forapplying a thermal pack to a lumbar region of a patient as recited inclaim 12, wherein said thermal media further comprises a plurality ofsub-bags filled with water.
 15. The method for applying a thermal packto a lumbar region of a patient as recited in claim 11, wherein saidbody of said universal wrap is made of soft fabric.
 16. The method forapplying a thermal pack to a lumbar region of a patient as recited inclaim 11, comprising adjusting a length of one of said first segment andsaid second segment so that said hook panel lies proximate saidpatient's anterior abdomen when said hook panel is used to connect saiddistal end of said first segment to said distal end of said secondsegment.
 17. The method for applying a thermal pack to a lumbar regionof a patient as recited in claim 12, comprising adjusting a length ofone of said first segment and said second segment so that said hookpanel lies proximate said patient's anterior abdomen when said hookpanel is used to connect said distal end of said first segment to saiddistal end of said second segment.
 18. The method for applying a thermalpack to a lumbar region of a patient as recited in claim 13, comprisingadjusting a length of one of said first segment and said second segmentso that said hook panel lies proximate said patient's anterior abdomenwhen said hook panel is used to connect said distal end of said firstsegment to said distal end of said second segment.
 19. The method forapplying a thermal pack to a lumbar region of a patient as recited inclaim 14, comprising adjusting a length of one of said first segment andsaid second segment so that said hook panel lies proximate saidpatient's anterior abdomen when said hook panel is used to connect saiddistal end of said first segment to said distal end of said secondsegment.
 20. The method for applying a thermal pack to a lumbar regionof a patient as recited in claim 15, comprising adjusting a length ofone of said first segment and said second segment so that said hookpanel lies proximate said patient's anterior abdomen when said hookpanel is used to connect said distal end of said first segment to saiddistal end of said second segment.